Where does “flatlus” come from?

flatlus (Norwegian Nynorsk) comes from Norwegian Nynorsk flat, from Old Norse flatr, from Proto-Germanic flataz, from Proto-Indo-European plÁt-.

flatlus (Norwegian Nynorsk): crab louse

Definitions

  1. crab louse

Ancestry of “flatlus”, step by step

flatlus traces back through two separate lines of ancestry.

via Norwegian Nynorsk flat

StepLanguageWordMeaning
1Norwegian Nynorskflatflat
2Old Norseflatrflat, level; flat, prostrate
3Proto-Germanicflatazflat
4Proto-Indo-EuropeanplÁt-—

via Norwegian Nynorsk lus

StepLanguageWordMeaning
1Norwegian Nynorsklusa louse; a small insect that is either closely...
2Old Norselúslouse
3Proto-Germaniclūslouse
4Proto-Indo-EuropeanlewH-louse
Every word from Proto-Indo-European plÁt- →Every word from Proto-Germanic flataz →Every word from Old Norse flatr →